157 309 
Obtuscee Grun. 
249, N. Vidovichi Grun, V.H. Syn. tab. LXVII, fig. 7. 
Found only in two samples without habitat. 
Area: Villefranche, Adria, Java. 
Lanceolate Grun. 
250. N. Palea (Ktz.) W. Sm. var. minuta Bleisch. V.H. Syn. tab. LXIX, 
fig. 23. 
LN (1 sample). ‘ 
Area: the main species: Europe, Abyssinia, Japan, Central Asia. 
Nitzschiella Rabenh. 
951. N. longissima (Bréb.) Ralfs. Cnfr. V.H. Syn. tab. LXX, fig. 2 
& Clev. Westind. tab. III, fig. 21 (N. longissima var.? curvirostris). 
KKt (4 samples). - 
In the specimens examined by me 41/2—5 carinal puncta are present 
in 0,01 mm., the central one of those being remote from the two nearest, 
a fact which however looks to be intimated in the figure by V. H. quoted 
above. The more spaced carinal puncta seem to give this form a position 
nearer to Gleve’s var. curvirostris. In my specimens the horns are 
turned in opposite directions, but like H. Peragallo (Diat. de France 
p- 293) I hardly think this character has any systematic value. 
Area: N. longissima: West Indies, Europe, Madagascar, Labuan, Java, 
Samoa. 
var. curvirostris: St. Bartholomew, Java. 
252. N. Lorenziana Grun. V.H. Syn. tab. LXX, fig. 12. 
L. 0,25 mm. 
KKt, TK (2 samples). 
Area: Adriatic. 
— — var.? ineurva Grun. V.H. Lc. fig. 14. 
Found only in a sample from K Kt. 
Area: Adriatic. 
— — var. fossilis Brun. Brun & Temp. Japan tab. I, fig. 10. 
KKt, s.J, (2 samples). 
Area: Calcaire de Yedo (Brun l.c. p. 46). 
253. N. diversecostata Brun. Cl]. Diat. Il, tab. V, fig. 11. 
K Kt (2 samples). 
Area: ,Moris Creek sondage‘ (Brun lL. c., p. 78). 
